I will admit my ignorance on Facebook's algorithms, but were they trying to bury all negative stories on Hillary or the unsubstantiated "fake news" ones I referenced above?

They ended up blocking a lot of conservative and non-partisan stories that contained factual criticisms of Hillary. I've seen some of those reports and there was nothing fake about them. Yes, fake news stories were blocked but so were a lot of legitimate ones. They've claimed to have made changes but they haven't. Facebook is very biased and if Zuckerberg runs for president and gains the Democratic nomination, I will not vote Democrat in 2020. That would mean the Democratic Party has lost its way in the same manner the Republican Party did in 2016, allowing someone wholly unqualified and clearly incompetent to serve as its nominee. We already have a maniac in office, we don't need another.